CN2313146Y - Composite heat-insulation direct-buried tube for hot-water supply net - Google Patents

Composite heat-insulation direct-buried tube for hot-water supply net Download PDF

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Publication number
CN2313146Y
CN2313146Y CN 97231359 CN97231359U CN2313146Y CN 2313146 Y CN2313146 Y CN 2313146Y CN 97231359 CN97231359 CN 97231359 CN 97231359 U CN97231359 U CN 97231359U CN 2313146 Y CN2313146 Y CN 2313146Y
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China
Prior art keywords
layer
heat insulation
insulation layer
thermal insulation
heat
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Expired - Fee Related
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CN 97231359
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Chinese (zh)
Inventor
吴英华
贾淑月
杨忠文
韩建华
杨国锋
贾淑英
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吴英华
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Priority to CN 97231359 priority Critical patent/CN2313146Y/en
Application granted granted Critical
Publication of CN2313146Y publication Critical patent/CN2313146Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a composite heat insulation direct-buried tube for hot water supply nets, which comprises a metal pipe, a high temperature resistant antirust coat, a dry lubricant layer, a heat-insulation layer and an anticorrosive and waterproof protection layer, wherein, a thermal radiation proof layer is arranged between the dry lubricant layer and the heat insulation layer; the heat insulation layer of a water feeding heat insulation pipe is composed of a hydrophobic inorganic heat insulation layer and a polyphenyl foaming heat insulation layer; an aluminum foil thermal radiation proof layer is arranged between the hydrophobic inorganic heat insulation layer and the polyphenyl foaming heat insulation layer. The utility model has the advantages of low heat loss, favorable heat insulation performance, long service life, low cost, etc.

Description

Heat supply network of rivers complex heat-preservation direct buried pipe
The utility model relates to a kind of heat supply network of rivers complex heat-preservation direct buried pipe, and it comprises water, backwater insulation direct buried pipe, belongs to a kind of complex heat-preservation direct buried pipe.
Existing heat supply network of rivers complex heat-preservation direct buried pipe; its structure is to be followed successively by metal tube, polyurethane insulation coating, anticorrosion waterproof protecting layer from inside to outside; because the thermal expansion coefficient of metal tube thermal insulation layer and polyurethane insulation coating is different; therefore fragile polyurethane insulation coating strengthens heat loss, shortens direct buried pipe working life; and cost height; polyurethane contains fluorine, and is volatile, atmosphere pollution.
The purpose of this utility model be to overcome the deficiency in the background technique and provide that a kind of heat loss is little, good heat insulating, cost are low, the heat supply network of rivers complex heat-preservation direct buried pipe of long service life.
The purpose of this utility model be achieved in that it be on the basis of existing heat supply network of rivers complex heat-preservation direct buried pipe, carry out improved, comprise metal tube, thermostable rustproof coating, dry lubricant layer, thermal insulation layer, anticorrosion waterproof protecting layer, between dry lubricant layer and thermal insulation layer, be provided with the anti-heat radiation layer; The thermal insulation layer of last water thermal insulation pipe is by the hydrophobic inorganic insulating layer and the polyphenyl foam thermal insulation layer is two-layer constitutes, and the hydrophobic inorganic insulating layer is at nexine, is provided with aluminium foil anti-heat radiation layer, the double as separation layer between two-layer.Because the temperature of return pipe is lower, not only reach the insulation purpose but also reduce cost, its structure is simplified its structure on the basis of last water thermal insulation pipe, and its thermal insulation layer is density 30kg/m 3The polyphenyl foam thermal insulation layer that above ability is 75 ℃.Removed aluminium foil anti-heat radiation layer.
The purpose of this utility model can also realize by following technical measures: be provided with the dry lubricant layer in the thermal insulation layer inboard.
The utility model compared with prior art has following advantage:
1, because the thermal insulation layer of last water thermal insulation pipe is by the hydrophobic inorganic insulating layer and the polyphenyl foam thermal insulation layer is two-layer constitutes, the thermal insulation layer of backwater thermal insulation pipe is the polyphenyl foam layer, greatly reduces cost;
2, owing to be provided with the anti-heat radiation layer, thereby reduce heat loss, improved thermal insulation property; And because polyphenyl foam is little than the polyurethane water absorption rate, the water absorption rate of polyurethane is 2%, and the polyphenyl foam water absorption rate only is 0.004%, the thermal conductivity of water is 22.9 times of air thermal conductivity again, thereby the polyphenyl foam poor thermal conductivity, heat waste is little, thereby improves heat insulating ability greatly;
3, owing to be provided with the dry lubricant layer between thermal insulation layer and the metal tube, metal tube can not destroy thermal insulation layer in flexible, thereby increases the service life.
4, because the utility model does not contain polyurethane, free from environmental pollution.
Description of drawings:
Fig. 1 is the structural representation sectional view of water thermal insulation pipe on the utility model.
Fig. 2 is the utility model backwater insulation pipe structure schematic representation sectional view.
Among the figure: thermostable rustproof coating (1), dry lubricant layer (2), anti-heat radiation layer (3), hydrophobic inorganic insulating layer (4), aluminium foil anti-heat radiation layer (5), polyphenyl foam thermal insulation layer (6), anticorrosion waterproof protecting layer (7), metal tube (8)
Below in conjunction with drawings and Examples in detail the utility model is described in detail:
Last water insulation direct buried pipe such as Fig. 1; it be on the basis of existing network of rivers complex heat-preservation direct buried pipe, carry out improved; between dry lubricant layer (2) and hydrophobic inorganic insulating layer (4), be provided with anti-heat radiation layer (3); be provided with aluminium foil anti-heat radiation layer (5) between hydrophobic inorganic insulating layer (4) and the polyphenyl foam thermal insulation layer (6); because hydrophobic inorganic insulating layer (4) and polyphenyl foam thermal insulation layer (6) have constituted the thermal insulation layer of this pipe, this pipe integral body is followed successively by metal tube (8) from inside to outside; thermostable rustproof coating (1); in lubricant layer (2); anti-heat radiation layer (3); hydrophobic inorganic insulating layer (4); aluminium foil anti-heat radiation layer (5); polyphenyl foam thermal insulation layer (6); anticorrosion waterproof protecting layer (7).Backwater insulation direct buried pipe such as Fig. 2 are followed successively by metal tube (8), thermostable rustproof coating (1), dry lubricant layer (2), anti-heat radiation layer (3), polyphenyl foam thermal insulation layer (6), anticorrosion waterproof protecting layer (7) from inside to outside.

Claims (2)

1, a kind of heat supply network of rivers complex heat-preservation direct buried pipe, it comprises metal tube, thermostable rustproof coating, thermal insulation layer, anticorrosion waterproof protecting layer, it is characterized in that:
A, between dry lubricant layer and thermal insulation layer, be provided with the anti-heat radiation layer;
B, go up the water thermal insulation pipe thermal insulation layer by the hydrophobic inorganic insulating layer with the polyphenyl foam thermal insulation layer is two-layer constitutes, be provided with aluminium foil anti-heat radiation layer between two-layer.
2, heat supply according to claim 1 network of rivers complex heat-preservation direct buried pipe is characterized in that the thermal insulation layer inboard is provided with the dry lubricant layer.
CN 97231359 1997-12-22 1997-12-22 Composite heat-insulation direct-buried tube for hot-water supply net Expired - Fee Related CN2313146Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97231359 CN2313146Y (en) 1997-12-22 1997-12-22 Composite heat-insulation direct-buried tube for hot-water supply net

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97231359 CN2313146Y (en) 1997-12-22 1997-12-22 Composite heat-insulation direct-buried tube for hot-water supply net

Publications (1)

Publication Number Publication Date
CN2313146Y true CN2313146Y (en) 1999-04-07

Family

ID=33943590

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97231359 Expired - Fee Related CN2313146Y (en) 1997-12-22 1997-12-22 Composite heat-insulation direct-buried tube for hot-water supply net

Country Status (1)

Country Link
CN (1) CN2313146Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9074778B2 (en) 2009-11-04 2015-07-07 Ssw Holding Company, Inc. Cooking appliance surfaces having spill containment pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9074778B2 (en) 2009-11-04 2015-07-07 Ssw Holding Company, Inc. Cooking appliance surfaces having spill containment pattern

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee